import { type DataWriter } from '../data-writer.ts';
import { TableBuilder } from '../table-builder.ts';
/**
 * The 'hhea' (Horizontal Header) table contains global
 * metrics for horizontal layout and other information.
 */
export declare class HheaTable {
    readonly ascender: number;
    readonly descender: number;
    readonly lineGap: number;
    readonly advanceWidthMax: number;
    readonly minLeftSideBearing: number;
    readonly minRightSideBearing: number;
    readonly xMaxExtent: number;
    readonly caretSlopeRise: number;
    readonly caretSlopeRun: number;
    readonly caretOffset: number;
    /** Number of hMetric entries in the `hmtx` table. */
    readonly numberOfHMetrics: number;
    /**
     * Reads a 'hhea' table from the given DataView.
     */
    static read(data: DataView): HheaTable;
    private constructor();
}
/**
 * Builder for the 'hhea' table.
 */
export declare class HheaTableBuilder extends TableBuilder {
    ascender: number;
    descender: number;
    lineGap: number;
    advanceWidthMax: number;
    minLeftSideBearing: number;
    minRightSideBearing: number;
    xMaxExtent: number;
    caretSlopeRise: number;
    caretSlopeRun: number;
    caretOffset: number;
    numberOfHMetrics: number;
    constructor(init?: HheaTable);
    writeTable(writer: DataWriter): void;
}